CHICOPEE, Mass. (WWLP) - Cooler temperatures this week mean it's time to crank the heat. There's the potential for freezing overnights in certain areas of western Massachusetts, so it's time to run through your checklist. Misconception of planting mums this fall Make sure to change your heating filter if the last change was longer than 3 to 6 months ago Have your oil refilled before winter The #1 mistake people make when it comes to home heating "I would say, know how to start your heating system before you're actually ready to use it. This way if there is something wrong with it you can get somebody out there sooner rather than later,” said service manager Tim Carriveau at Berkshire Heating & Air Conditioning. You'll also want to seal any large gaps in your home, starting with your doors and windows. This will also help save on your heating bill by as much as 25%. You can purchase these products at your local hardware store but do it before we get into the winter season.  7 Day Forecast Local News Headlines Springfield forum to discuss ballot question 2 Chicopee PD launch new public safety connection program Northampton wraps up final day of Paradise City Arts Festival The evolution and origins of the Boston accent WWLP-22News, an NBC affiliate, began broadcasting in March 1953 to provide local news, network, syndicated, and local programming to western Massachusetts. Watch the 22News Digital Edition weekdays at 4 p.m. on WWLP.com.